ORIGINAL: 66Cuda
LaIt is a 6SP car. Something I noticed right away is on the interior picture you can see a big red cut-off button behind the shifter. My thought is this is the emergency engine cut off switch. This leads me to believe that this is the big 6.4L HEMI! I believe this because all of dodges other engines are proven. There is no reason to have that cut off switch unless they are testing an engine that is not in production. There are some letters around the switch but I can’t read them, when I zoom the picture in they get all fuzzy.
The car they brought to the Calgary Auto show had the same red button, my guess is all preproduction driveable cars have it.